Process for filling and tamping molds



Feb. 16 1926.

A. KISSAM PROCESS FOR FILLING AND TAMPING MOLDS Filed June 27, 1924 {luvcmfoz flllen Kissam,

Q 1 a we particular reference to the filling of; molds Patented Feb. 16, 1926. v

UNITED STATES 1,573,346 PATENT OFFICE.

ALLEN KIS SAM, OF ORLANDO, FLORIDA.

' PROCESS FOR FILLING AND TAMPING MOLDS.

Application filed June 27,1924, Serial No. 722,842.

To all whom it may concern:

Be it known that I, ALLEN KISSAM, citi-' ,zen of the United States, residing at Orlando, in the county of Orange and State of Florida, have invented certain new and useful Improvements in Processes for Filling and Tamping Molds, of which the following is a specification. I

This invention relates toa process for making concrete blocks or the like, and has dry to flow, but, wet enough to stick together when squeezed iflf'tlle hand and compacting the same therein, or otherwise positioning the sameto sufficient pressure; 7

-'-A further. and more specific object of th invention is'to prpvide a process which aims to fill various sizes and shapes of molds with semi-wet concrete and simultaneously compacting the same therein with speed and economy, thereby facilitatlngproduction on a practical and feasible commercial scale.

In'carrying. the present invention into effect, it'will, of course, bev understood that any suitable and conv'enienttype of apparatus may be employedflmt by way of exparatus is shown in the accompa ample, a preferre and practical type of apilying draws ings, in which Figure 1 is a vertical'sectional view of one type of apparatus employed in prac ticing the process. I

Figure 2 is a side elevation of the apparatus shown in Fig. 1.

Figure 3 is .a horizontal cross sectional view taken on the line 33 of Fig. 1.

. Figure 4: is a top plan view of the. mold shown in Fig. 1.

As previously indicated, the present invention relates to a process for the filling of molds with semi-wet cementitious materials by projecting-such material with sufficient force into the mold to tamp or com pact the material in the mold Without the necessity of involving a separate tamping operation, thereby greatly expediting the formation of the blocks. For the purpose of accelerating the movement of the semiwet material in its movement toward the mold, fluid under ressure is utilized, the same being susceptible of ready control and also offering the advantage of using different fluids such as compressed air, gas, steam or vapor, where the circumstances require and the nature of the installation permits.

Referring to the drawings, which illus 'trateone form of apparatus, for carryin the process into effect, it will be observe that the mold is designated generally as A and is provided with the cores B which provide the block forming channels C. This mold A operates in conjunction with a material projecting device designated generally as D and including in its organization a casing 1 having a feeding hopper 2 at the upper end thereof which communicates with a charge or increment holding compartment 3 intended to hold a measured amount of concrete. The compartment or chamber 3 has its bottom wall formed by the sliding gate members 44 which meet at the center of the compartment and may be manipulated" I from opposite sides of the casing while the top of said compartment is formed by a cutoff plate 5 clearly shown in Figs. 1 and 2 of the drawing. 1

The casing 1 below the chamber 3 constitutes a shaping and guiding tube whose horizontal cross section members corres 0nd to the horizontal cross section of the lock to be made, or in other words must go inside with the formation of the mold A. Therefore, the guiding tube portion of the casing 1 is rovided with the core members '6 and 7 whlchgive the moving material the desired shape. In the drawing the cores are rectangular in horizontal cross section and the vertical "sides 8 thereo'f are arranged to form the, relativelyconstricted passages 9. These passages are preferably slightly narrower at the lower ends 9 due to the fact that the sides of; the casing 11 converge downwardlyio" a suflicient degree to provide the relatively constricted discharge orifices adjacent the mold A. .The upper ends of the cores 6 and 7 are provided with the converging wall portions 10 which converge to provide the material distributing points 11-11' the said points or tips 1111 being arranged and disposed so as to divide the transverse width of the casing 1 into equal shapes thereby assuring each of the the action of gas issuing through 17 as passages 9 receiving an equal quantity of noted. It is advantageous to'have sides of material. If desired the Walls 1010 may the tube converge slightly at 9 as the gas be made conical; the main point being to tends to expand in horizontal cross section provide converging passages 12 which eomat 9. At9 and beyond, the gas separates 70 municate with the passages 9. The cores 6 to a large extent from the mixture, the conand 7 are held in place withi the tub 1 erete due to its greater inertia continues by two thin metal strips 13Krunning through 1Ilt0 mold and iS compacted therein by the b th cores d l th h th id 6f tamping action of the particles themselves the tube 1 as'clearly shown in Figs. 1. and due to their very high velocity. Valve 16 75 3. Due to the fact that strips 13 present 1 1 W Closed and also Slides 4-4 and the in effect knife edges to the material, the pperati n can be repeated as soon as mold/ 1s empty.

flo f the latter is notobstructed.

2 Steam 1s greatly to be recommended as Th fluid pressure means employed pref- I erab y consists of a'pressur thu k 14 the fluid employed for several reasons. First 80 rounding the casing 1 and having an intake It can be generated Without h use Of fans line 15 connected therewith. the same being 01' pumps. Secondly, its water and heat con provided with an operators' control valv tent help to accelerate the set of the con- 16. This trunk 14 is preferably located on r flhndly, that which is entrapped in the outside of the casing 1 at a point where the m e ncr Wil n COI1d -I1Singdr w Q the passages 12 join the passages 9 and the the particles of concrete together, and last said trunk 14 communicates with said pasu 11 1 l ast, a Velocity of three hundred V sages 9 by an ejector port 17 which extends to four hundred feet per second can be acentirely around the casing/1, and whose q i ed y its use. However, any gas or sides diverge slightly in the directioniof VHP ld be used.

flow, The trunk or manifold 14 also sup- From the foregoing, it Will be llIldQIStOO'd plies. fluid under pres sure to the flues 18 that the present invention aims t0 PIOjQCE which communicate with the upper end of Q1 Shoot the semi-wet ma erial into the the compartment 3. These flues are relamold A. The material is first measured in tively wide as will be observed from Fig.2 the compartment 3 and then subjected to 95 and serve to supply pressure to the compressure at the t0p Of the compartment S0 partment 3T0 get behind the material theret0 Preseht the material QOIIStitlItiIIg the in and force it into the passages 12 when Charge gain t the gates 44. The quick th lid s r g t 4 4 are d, openlngof the gates releases the material The operation of the device is as follows: hlch f lls evenly into the passages 12 Th ho er-2 i u li d with on t and when the material reaches the zone of by any suitable means such as a conveyer. the accelerating blast fed through the port Slide 5 is'dra wn out and material falls into the material will be broken up intoan compartment 3. 5 is then closed and the elongated streamand sent with considerable ,jam Qin passages 9. Experience will soog gf said material through a tube into a mold weight of concrete in hopper 2 effectually force through the passages 9 into the corseals compartment 3 from above. Slide 5 respondlng compartments of the mold is set a sufficient distance above slides 44 It W111 f Course e understood t vato allow 8 to hold a suflicient amount of manous a ge ay be de in t e apparatus terial to. make 'a block. Valve 16 isv n w mp oyed, and also that the process can be o d nd tr m 1 f gas fl i t 4 practloed-with different formsof construe thence through 17 into passages 9 and tlOIl i ut in anyway departing from the through the outlets 9*. Gas also flows spirit ofthe invention or scope [of the apthrough flues 18 into compartment 3 on top pended claims. Y of concrete. Slides 44 are now smartly I claim:

pulled apart but not too rapidly. If opened 1. A process for the filling oftmolds with 115 too rapidly, gas above eoncrete in 3 would semi-wet cementitious materials which conblow it out of 3 so fast it would tend to sists-in forcing by fluid pressure a quantity teach the operater how fast to open slides eyond, the tube and molddiaving the same 4-4. As slides 4-4 are opened concrete cross sectional shape.

is blown out of 3 into 12. and is distributed 2. A process for the filling of molds with or given the-desired" horizontal crosssection- .semi-wetcementitious materials which conby cores Gand 7. -The stream of gas issu sists in forcing by fluid pressure a'quan-tity mg through port 17 increases the veloclty of said material through a tube into a mold of the moving concrete in passages 9 and beyond, the tube and mold having the same elongates said moving concrete in the dicross section, and while the mass is in morection of itsmotion, thus obviating any tion in the tube.to expose the same to the tendency of concrete to jam in 9. It is thus accelerating attion of a, blast of air or seen the action 1s very slmilar to the charge equivalent fluid. ln'a shot gun barrel with the exception of 3. A process for the filling of molds with semi-wet concrete or other similar cementitious materials in a dense compact condition by blowing a measured amount of said material through a tube which will give said material while in motion a cross section similar to the cross section of article to be molded, and accelerating the movethe impact developed upon striking mold 10 and particle of material behind striking particles of material in front, in direction of their motion, will fill mold with said material in a dense compact condition.

In testimony whereof I hereunto afiix my 15 signature.

ALLEN KISSAM. 

